Adapter with adjustment for setting cutters



Aug. 24, 1965 A. G. DAVIS 3,202,433

ADAPTER WITH ADJUSTMENT FOR SETTING CUTTERS Filed Feb. 24 1964 v so Sn4a|4 INVENTOR.

RT// 6270/?65 0A V/S @JMW United States Patent O 5,262,433 ADAPTER Wiii ABEUSME'NT FR SETNG CUTTEES Arthur George Davis, 35d Marais, Grosse Pointe Park, Mich. Filed Feb. 24, 1964, Ser. No. 34%,67 8 Claims. (Cl. 279-9) This invention relates generally to tool holders, and refers more particularly to a tool holder in which the position of the tool can be readily adjusted.

One of the essential objects of the invention is to provide a tool holder having a socket for receiving a tool shank, and means for quickly and accurately adjusting the position of the tool shank in the holder.

Another object or" the invention is to provide a tool holder having an adjustment pin projecting into the bottom of the socket, and provided further with means. for axially moving the pin to correspondingly adjust the tool shank.

Another object is to provide a novel means for advancing the adjustment pin comprising a rotor mounted in the holder having means engageable with the end of the pin to axially move it when the rotor is rotated.

Another object is to provide an axially movable rod in the holder operatively connected to the rotor for rotating the same.

Another object is to provide a screw threaded in the holder and having end-to-end abutting engagement with the rod, for axially advancing the rod.

In accordance with further features of the invention, the rotor extends transversely of the adjustment pin and has a peripheral notch presenting an abutment surface engageable with the pin to axially move the pin when the rotor is rotated. The rotor also extends transversely of the rod and has a second peripheral notch spaced axially from the first presenting a second abutment surface adapted to be engaged by the rod.

Other objects and features of the invention will become more apparent as the description proceeds, especially when considered with the accompanying drawings, wherein:

FIGURE l is a side elevational View of a tool holder embodying my invention.

FIGURE 2 is a fragmentary sectional view taken on the line 2 2 of FIGURE l.

FIGURE 3 is a fragmentary sectional view taken on the line 3 3 of FIGURE 1.

FIGURE 4 is a detail View in elevation of the rotor which forms a part of the means for adjusting the tool shank.

FIGURE 5 is an end View of the rotor.

Referring now more particularly to the drawings, the tool holder is generally designated and as seen best in FIGURE l has an elongated tapered body and an enlarged outer end 12. A cylindrical socket 1d is formed centrally in the outer end 12 lof the holder. Received in the socket is the shank 16 of a tool which may for example be the shank of a milling cutter. T he shank 16 is cylindrical and has a close sliding lit in the socket.

The shank i6 is locked in the socket in axially adjusted position by the screws i8 in the parallel threaded holes in the outer end 12 o the holder. The threaded holes 2i) extend from the outer surface of the tool holder and open into the socket 14 through the side wall thereof. The tool shank 16 is formed with the spaced tapered flats 22 which are spaced apart a distance substantially equal to the distance between the threaded holes Zi). When the screws 18 are threaded in, their leading ends engage the tapered flats 22 to lock the shank llo in axially adjusted position. The holes Ztl are inclined so that their axes extend at right angles to the tapered ilats 22. Ac-

.lel to the axis of rotation of the rotor. Vand 52 form a right angle.

j ZB Patented Aug. 2d, i965 cordingly, the ends of the screws lit will bear down directly upon the ilats. The screws it obviously are capable of locking the tool shank in the socket throughout a limited range of axial adjustment.

1n 4order to adjust the shank 16 axially, there is provided the cylindrical pin 24 which is capable of longitudinal sliding movement within the central axial passage 2.6 in the holder. This passage opens centrally into the bottom of the socket 14. The Outer end of the pin 2d projects into the socket and engages the end of the tool shank. The opposite or inner end of the pin has an enlarged head 28 which is disposed in an enlarged extension 3d of the passage 2d. Outward movement of the pin 2d is limited by engagement of its head 28 with the shoulder 32 separating the inner end of passage 26 from its enlarged extension 3d.

In order to axially advance the pin 2.4 to adjust the tool shank, a substantially cylindrical rotor 36 is provided. The rotor 36 is capable ot rotating in the transverse passage 38 in the body of the tool holder. The passage Si@ extends at right angles to the passage 26 and cuts into the extension 30 thereof. Obviously, therefore, rotor 36 is at right angles to pin 24. in line with the pin 24, the rotor is provided with a peripheral notch dd. The notch 4G is a substantially diametrical notch, that is, the bottom surface 42 thereof is hat and passes through the axis of the rotor and is parallel to the axis of the rotor. The side walls of the notch are at right angles t-o the rotor axis. The edge 44 of the notch, that is the edge forming the junction between the bottom d2 of the notch and the peripheral surface of the rotor, engages the enlarged head 28 of the pin.

The rotor 36 has a second peripheral notch i8 which is spaced axially from the notch fill. The notch 4d has two plane surfaces Sti and 52, both of which are paral- The surfaces Sil in order to rot-ate the rotor, there is provided a rod 54 which is axially slidable in a passage 56 of the holder. T he rod Se extends at right angles to the rotor. The end of the rod extends into the rotor passage 3S and abuts the surface 5@ of notch 43. The outer end of the rod extends into an enlarged threaded hole 5S which connects with passage 56 and opens to the exterior through the outer end of the holder. A screw titl is threaded into the hole 58 and abuts the outer end of rod Se.

In order to lock the screw @il in adjusted position, there is a locking member 62 in a threaded hole o4 in the holder. This hole opens to the exterior and a screw e6 threads into the passage behind the member 62. The member 62 does not thread in the hole but is free to slide axially. Member 62 is formed with threads d3 on its end face complementing the threads on screw di?, so that when member 62 is forced 4tightly against the threaded surface of screw dil, the latter will be locked in position. Screw 66 is employed to advance the member 62 under pressure.

In order to adjust the shank lid, the screws i8 are first hacked -oilc to release the shank. Then, to advance the shank le in an outward direction, screw o6 is first backed oli to release screw 6i?, and screw ed is advanced to advance rod 54 and thereby rotate rotor 36 by reason of the Contact of the end of rod Se with the surface Sti of notch d3. Rotation of rotor E6 (counterelockwise in FIG. 2) operates to advance the pin 2,4 in an outward direction through the engagement of the edge id of notch d@ with the head 28 ofthe pin. The tool shank is correspondingly advanced. In order to retract or move the tool shank in an inward direction, the rod 54 must be permitted to Withdraw in an outward direction by backing o the screw 69. Then pressure can be applied in an inward direction on the tool shank, forcing the pin 2d in an in- V.Vvvrard direction and in return rotating the rotor.V The through the open end 72 of passage 3S by rst withdrawing the rod 54 fromnotch 48.

`What I claim as my invention is:

'1. In'a tool holder having a socket in its outer end for receiving a tool shank, means for axially adjusting the shank in said socket including a pin, an axial passage in said holder opening into the bottom of said socket, said pin .being axially slidable in said passage and lhaving its outer end projecting into said socket,tand means carried by said holder for axially adjusting said pin including a rotor extending. transversely of said pin and mounted for rotation in said holder, said rotor having a peripheral notch presenting an abutment surface spaced from the axis of said rotor and engageable with said pin toaxially move said pin when said rotor Vis rotated, and meansrfor rotating said rot-or, said means for rotating said rotor including a rod axially slidably mounted in'a passage in said holder, one end of said rod engaging said rotor at apoint spaced from the axis of said rotor so as to rotate said rotor upon axial movement of'said rod, and means for axially moving said rod. i

`2. The structure defined lin claim 1, wherein the means for axially moving'said rod comprises a screw threaded in said holder and having end-to-e'ndll abutting engagement Awit-h said rod, said screw being'accesible for manual "operation thereof.

3. In a tool holder having a socket in its outer end for receiving artool shank, means fortaxially adjusting the shank in said socket including a pin, an'axialV passage in said holder opening into the bottom of said socket, said pin being axially slidable in said passage and having its outer end projecting into said socket, and means carried by said holder for axially adjusting :said pin including a rotor extending Ytransversely of Vsaid `pin and mounted for rotation in Vsaid holder, said rotor having a peripheral notch presenting'Y an abutment'surface spacedfrom the axis of said rotor and engageablewithsaid pin-to axially move said pin when said rotor is rotated, said rotor having a second peripheral notch spaced axially'frorn the first presenting a'; second abutment surface spaced-fromthe axis of said rotor, and means for rotating said rotor including a rod extending transversely ofsaidrotor and axially slidably mounted in a passage insaid holder, one 'end of said rod engaging said `second abutment surface soas to rotate for axially moving said rod comprising a screw threaded in said holder and having end-to-end abutting rengagement with said rod, said screw being accessible for manual operation thereof.

4. The structure defined in claim 3, wherein lookin means areprovided vengageable with said screw for holding the `Same in adjusted position. Y

5. In a tool holder having a socket for receiving a tool shank, means for axially adjusting the shank in the socket including a pin carried by said holder and projecting into said socket, and means for moving said pin in the direction 0f its length to adjust the tool shank including a rotor mounted for rotation in said holder and extending transversely of said pin, said rotor having a peripheral notch presenting an abutment surface spaced from the axis of rotation ofvsaid rotor and engageable with the end of said pin to axially move said pin when saidrotor isrotated, a rod extending transversely` of said rotor and axially slidably mounted in said holder, one end ofsaidrod engaging said rotor at a point spaced from the axis of said rotor so as to rotate said rotor upon axial movement of said Vrod, and means for axially moving said rod.

6. The structure deiinedinclaim S, wherein the means for axially moving :said rod comprises a -screw .threaded in said'holder and having end-to-end abutting engagement with said rod, said screwbeing accessibley for manual operation thereof. t

7. Ina tool holder having a socket for receiving a tool shank, means fortaxially adjusting the shank in the'sockt including a pin carried by said holder and projecting into said socket, and means for moving said pin in the direc- -tion of its length to adjustthe tool shank including. a rotortmounted for rotation in said holder and extending transversely of said pin, said rotor having means engageable with said pin to move .said pinin the direction of'its 'length when said i rotor is rotated, and a rodtextending transversely of said rotor and, mounted in said holder for movement in the direction of its length, saidvrod engaging saidrotor and adaptedto rotate the same when said rod is moved in the idirection of its length.

8. In a tool holder having a socket for receiving a tool shank, means for axially adjusting the shank'in the socket including a pin carried by said holder and projecting into said socket, and means .formoving said pin inv the direcl tion of its length to adjust the tool shank including a ro- Vsaid rotor upon axial movement of said rod, 'andrmeans I Y torY mounted for rotation in said holder and"extending transversely of said pin, said rotor having meansfeng'ageable with said pin to move said pin in the direction of its length when said rotor is rotated, a rod extending transversely of said rotor and mountedin said holder for movement in thedirection of its length, said rod engaging .said rotor'at a'po'int spaced Vfrom lthe axis of said rotor soasto rotate said rotor upon` movement ofsaid rod V,in the direc- Vtion of its length, Vand means Mformoving said rod, inthe direction ofitselength References `Citedby the Examiner l UNITED STATES .PArENas ROBERT C. RIORDON, Primary Examiner, 

1. IN A TOOL HOLDER HAVING A SOCKET IN ITS OUTER END FOR RECEIVING A TOOL SHANK, MEANS FOR AXIALLY ADJUSTING THE SHANK IN SAID SOCKET INCLUDING A PIN, AN AXIAL PASSAGE IN SAID HOLDER OPENING INTO THE BOTTOM OF SAID SOCKET, SAID PIN BEING AXIALLY SLIDABLE IN SAID PASSAGE AND HAVING ITS OUTER END PROJECTING INTO SAID SOCKET, AND MEANS CARRIED BY SAID HOLDER FOR AXIALLY ADJUSTING SAID PIN INCLUDING A ROTOR EXTENDING TRANSVERSELY OF SAID PIN AND MOUNTED FOR ROTATION IN SAID HOLDER, SAID ROTOR HAVING A PERIPHERAL NOTCH PRESENTING AN ABUTMENT SURFACE SPACED FROM THE AXIS OF SAID ROTOR AND ENGAGEABLE WITH SAID PIN TO AXIALLY MOVE SAID PIN WHEN SAID ROTOR IS ROTATED, AND MEANS FOR ROTATING SAID ROTOR, SAID MEANS FOR ROTATING SAID ROTOR INCLUDING A ROD AXIALLY SLIDABLY MOUNTED IN A PASSAGE IN SAID HOLDER, ONE END OF SAID ROD ENGAGING SAID ROTOR AT A POINT SPACED FROM THE AXIS OF SAID ROTOR SO AS TO ROTATE SAID ROTOR UPON AXIAL MOVEMENT OF SAID ROD, AND MEANS FOR AXIALLY MOVING SAID ROD. 